Questions and Answers
Which of the following compete for space on intertidal rocks? (Select all that apply)
Cod are eaten by seals and polar bears.
True
Which bacterial strain is the least competitively dominant under the specific conditions observed?
Strain T
What dramatically changes when starfish are removed from the simulated system?
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Which of the following is not an essential characteristic of a keystone species?
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Which method will tell any ecologist about both the size and density of a population?
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Humans have which type of survivorship curve?
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Which of the following is best at showing the life expectancy of an individual within a population?
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How is a clumped population distribution beneficial for prey animals?
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Which of the following is associated with long-term parental care?
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Which of the following is associated with multiple reproductive episodes during a species' lifetime?
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Which of the following is associated with the reproductive potential of a species?
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Species with limited resources usually exhibit a(n) ________ growth curve.
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The maximum rate of increase characteristic of a species is called its ______.
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The population size of a species capable of being supported by the environment is called its _____
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Species that have many offspring at one time are usually:
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A forest fire is an example of ________ regulation.
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Primates are examples of
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Which of the following statements does not support the conclusion that giraffes are k-selected species?
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Which of the following events would not negatively impact Yellowstone's Grey wolf carrying capacity?
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A country with zero population growth is likely to be ________.
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Which type of country has the greatest proportion of young individuals?
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Which of the following is not a way that humans have increased the carrying capacity of the environment?
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The first species to live on new land, such as that formed from volcanic lava, are called _____
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A symbiotic relationship where both of the coexisting species benefit from the interaction is called _____
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Which of the following is not a mutualistic relationship?
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Which type of mimicry involves multiple species with similar warning coloration that are all toxic to predators?
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The ability of rats to learn how to run a maze is an example of ________.
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The training of animals usually involves ________.
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The sacrifice of the life of an individual so that the genes of relatives may be passed on is called ________.
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Why are polyandrous mating systems more rare than polygynous matings?
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Study Notes
Intertidal Competition
- Mobile species like muscles, whelk, and chiton compete for space on intertidal rocks.
Arctic Sea Ice Food Web
- Cod are prey for seals and polar bears; however, this statement is incorrect in the provided context.
Bacterial Competition
- Strain T is identified as the least competitively dominant among bacterial strains in fish guts.
Starfish Removal Impact
- Removal of starfish leads to a community dominated by mussels, illustrating keystone species dynamics.
Keystone Species Characteristics
- Essential traits of a keystone species do not include direct interaction with every community species.
Population Surveys
- The mark and recapture method provides insights into both the size and density of populations.
Human Survivorship
- Humans typically exhibit a Type I survivorship curve, indicating high survival rates until old age.
Life Expectancy Metrics
- Life tables are effective tools for analyzing individual life expectancy within populations.
Clumped Population Benefits
- Clumped distribution offers prey animals better protection from predators through increased group size.
Reproductive Strategies
- Species with long-term parental care often have few offspring, enhancing survival rates.
Reproduction Patterns
- Iteroparity refers to species that engage in multiple reproductive episodes across their lifetimes.
Reproductive Potential
- Fecundity is a key measure of a species' reproductive potential, indicating the number of offspring produced.
Population Growth
- Logistic growth curves represent species that encounter resource limitations.
Biotic Potential
- The biotic potential describes the maximum reproductive rate of a species.
Carrying Capacity Definition
- Carrying capacity denotes the maximum population size that an environment can sustain.
r-selected Species
- r-selected species produce many offspring at once but invest less in individual care.
Density Independent Regulation
- Natural events like forest fires exemplify density independent regulation, affecting populations regardless of size.
K-selected Species
- Primates are identified as K-selected species, often characterized by fewer offspring and greater parental investment.
Giraffes as K-selected
- The ability of newborn giraffes to walk shortly after birth does not contradict their classification as K-selected species.
Grey Wolf Carrying Capacity
- Snow in winter does not adversely affect the carrying capacity of Yellowstone's grey wolf population.
Zero Population Growth
- Countries with zero population growth are often economically developed.
Young Population Proportions
- Economically underdeveloped countries typically have a higher proportion of young individuals.
Human Impact on Carrying Capacity
- The use of language is not a method through which humans have increased environmental carrying capacity.
Pioneer Species
- The first organisms to colonize new land formed from volcanic lava are known as pioneer species.
Mutualistic Relationships
- Mutualism describes a symbiotic relationship where both species benefit from their interaction.
Non-Mutualistic Interaction
- A helminth feeding from its host does not exemplify a mutualistic relationship.
Types of Mimicry
- Mullerian mimicry involves multiple toxic species sharing similar warning colorations to deter predators.
Cognitive Learning Example
- Rats learning to navigate mazes serves as an example of cognitive learning in animals.
Animal Training Methods
- Operant conditioning is commonly used in the training of animals for behavior modification.
Kin Selection
- Kin selection refers to the altruistic behavior that allows individuals to sacrifice their lives to ensure the survival of their relatives' genes.
Polyandry vs. Polygyny
- Polyandrous mating systems are rarer than polygynous systems because males can often reproduce multiple times in a single breeding season.
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Description
Test your knowledge of keystone species and their roles in different ecological communities with these flashcards. Focus on species interactions, such as competition for space and food web dynamics. Ideal for students studying ecology.
